Western Australia Coal Seam Gas Gathering Trunk Pipeline Project

This key infrastructure project is located in Pilbara, Western Australia, for regional coal seam gas development. The pipeline transports high-pressure coal seam gas from wellheads to central processing plant.The inland desert area features huge temperature variation and highly saline corrosive soil. The project complies with Australian oil & gas pipeline standard AS2885, imposing strict requirements on pipe mechanical performance, weldability and external anti-corrosion system.After sample evaluation, third-party lab testing and factory audit, Pengyuan Steel was selected as designated seamless line pipe supplier.

Project Challenges

1. Buried installation in saline desert soil, requiring reliable anti-corrosion coating against long-term electrochemical corrosion;

2. High-pressure gas transportation, demanding stable toughness to prevent stress cracking;

3. Full compliance with AS2885 Australian pipeline standard, complete traceable English documentation required;

4. Remote mining location, phased container shipment to match segmented field construction schedule.

Supplied Products

Product: API 5L X52 PSL2 seamless line pipes with single-layer FBE fusion bonded epoxy coatingSize: OD168.3mm～OD323.9mm, wall thickness 6.4mm～12.7mmTotal quantity: 1,720 metric tonsStandards: API 5L, AS2885

Pengyuan Solution

1. X52 line pipe billets produced in accordance with API 5L, controlled carbon equivalent to guarantee field weldability;

2. Automated FBE coating line to precisely control coating thickness and adhesion for underground desert service;

3. 100% ultrasonic inspection and hydrostatic test for each pipe, unique marking for full traceability;

4. Production and sea transport arranged in five batches to maintain continuous construction supply;

5. Complete set of English MTC, coating inspection and NDT documents provided, supporting witnessed third-party inspection in Australia.

Project Result

All line pipes arrived at Port Hedland on schedule and successfully passed joint acceptance by end client, EPC contractor and surveyors. The pipeline operates stably for coal seam gas transmission with intact anti-corrosion coating and no leakage risk. With proven delivery performance, Pengyuan Steel is listed as a long-term qualified supplier for local energy infrastructure projects.